MGS best before date

[Joe Cygan]

Group,

I noticed that there is a “best Before” date on my MGS hardener. Is there a rule of thumb to use this after the date?

 

Joe Cygan

Cozy MKIV #1022

[steve]

hardners/isosinides kick when exposed to moisture[air].i just lost a qt opened and closed and sat for 4 days. its now jello,and no warranty....rats

[LargePrime]

Have you talked to MGS about this? There is a rep who worked close with nat you might get in touch with. It will be in the news letters.

 

I did not know air would effect hardners. I thought both were inert untill mixed.

[dust]

I talked to them about this a long time ago, the reason they put a date on the can is a LARGE customer required it. it is good waaaaay past the date on can

 

enjoy the build

 

dust

[Joe Cygan]

Thanks for all the information. Also, the other Cozy group stated that the date was put on there to keep our government happy. It seems I’ll be fine for a good while.

[John Slade]

hardners/isosinides kick when exposed to moisture[air].i just lost a qt opened and closed and sat for 4 days. its now jello,and no warranty....

Which epoxy system was that, Steve?

I use MGS 335. My hardener lid has been fairly loose for years. Sometimes I've left it off altogther. I live in S. Florida where the humidity is pratically tangible. Never had any problem with "jello" hardener other than a bit of crytalization which can be remedied by heating.

[LargePrime]

If you have a gallon that went "jello", when others have not doing the same thing, then it seems possible that there was a batch error, or it is counterfeit.

 

There could be another explination but these possabilities force me to suggest that you should/must contact MGS directly. And soon.

[steve]

the kickers [isosinides] found in all 2 part paints ppg emron est.. is what went to jello,sorry i got ahead of my self. o ya, after talking to the rep,and reading here, some my not know that the crox linkers in the cytalist are 2% by vol sionid[rat killer]and ppg or your user friendly 2 part paint or clear is the same as the deadly emeron .